Gas-iron.



e. WEDDER'BURN.

GAS IRON.

APPLICATION FILED DEC.24, 1912. 1,151,140. Patented Aug. 24,1915.

3 SHEETS-SHEET I.

L 73 f0 6L MOI/MW G. WEDDERBURN.

GAS IRON. APPLICATION FILED 050.24. 1912.

1 1 5 1 1 40. Patented Aug. 24, 1915.

3 SHEETSSHEET 2.

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G. WEDDERBURN.

GAS IRON.

APPLICATION FILED DEC.24, 1912.

1 1 5 1 1 40., Patented Aug. 24, 1915.

3 SHEETS-SHEET 3.

GEORGE WEDDERBURN, OF VIENNA, VIRGINIA.

GAS-IRON.

Specification of Letters Patent.

Patented A11 24, 1915.

Application filed December 24, 1912. Serial No. 738,453.

same time eliminating any possibility of generating poisonous gases suchas carbon monoxid as the result of imperfect combustion.

It is a matter of record that hundreds of deaths have resulted fromasphyxiation through the liberationof carbon monoxid generated, as aresult of imperfect combustion, in household appliances designedto beheated by gas, such as water heaters, gas stoves, gas irons, etc. Thisappalling result is invariably due to total ignorance on the part ofinventors and manufacturers of such appliances of the chemicalproperties of illuminating gas and of the reaction that takes place whenthe same is decomposed by ignition in a partially closed receptacle,such as for instance, a gas iron. Hence it is thought proper to giveherewith a brief account on the phenomenon of combustion, with relationto the subject under consideration, and thus show how a seeminglytrivial change in the mechanical construction of apparatus of thischaracter will result in the liberation of a harmless instead of apoisonous gas, as a product of combustion. Illuminating gas is chieflycomposed of compounds of carbon and hydrogen, as well as othersubstances such as ammonia, hydrogen sulfid, carbon dioxid, atmosphericoxygen, and nitrogen. Since compounds of carbon and hydrogen comprisethe principal elements of gas, the other substances above mentionedoccur more or less as impurities, we will now consider what occurs whenthe same is burned in sufficient and insufficient quantities ofatmospheric oxygen. Broadly speaking the products of combustion arecarbon'monoxid, or carbon dioxid, or both according to the supply ofoxygen admitted to the flame. Carbon monoxid is a product of combustionand is generated when gas is burned in a limited supply of oxygen. Itisalso formed by the action of carbon or soot on carbon dioxid at hightemperatures. Thus it will be seen that improperly constructedappliances designed to burn gas not only liberate carbon monoxid as adirect product of combustion but also set up a secondary generation ofthis gas by the deposits of carbon or soot which combines with carbondioxid under theinfluence of heat to form carbon monoxid.- .Carbonmonoxid is a colorless and tasteless gas and acts upon the human systemas a deadly poison, one per cent. of

the gas being suflicient to prove fatal. Carbon dioxid is the result ofcombustion under favorable conditions or when gas is burned in abundantquantities of atmospheric oxygen intelligently supplied. This gas,commonly known as carbonic acid gas, is perfectly harmless and is thrownout of the lungs as a waste product of all breathing animals and itsliberation as a harmless product of combustion is achieved in thepresent invention.

With the above and other objects in view the invention comprises certaincombinations, constructions and relations of parts, clearly illustratedin the accompanying drawings and fully described in the followingspecification.

In the drawings Figure 1 is a side elevation of my improved gas heatedsad iron, Fig. 2 is a longitudinal sectional view of a modification,Fig. 3 is a top plan view of the form shown in Fig. 2 with the cover ofthe iron removed, Fig. 4c is a transverse sectional view thereof, Fig. 5is a longitudinal sectional view of Fig. 1, Fig. 6 is a top plan viewthereof with the cover of the iron removed toshow its interior, Fig. 7is a transverse sectional view taken on line 77 of Fig. 5, Fig. 8 is avertical longitudinal sectional view of another modified form of theimproved gas heated sad iron, Fig. 9 is a top plan view thereof, withthe cover removed and a portion of the upper tube broken away to showthe arrangement of jet slots in' the lower tube, and Fig. 10 is atransverse sectional view of Fig. 8.

Referring to Fig. 2 of the accompanying drawings 5 denotes the body ofthe improved gas heated sad iron, which is preferably cast, and which isformed with a base 5 and an upstanding wall 5 integral withsaid base.The exterior of the base and the upstanding wall are suitably finished,as by nickel plating.

Any suitable cover may be employed to close the heating chamber 6, andthe cover shown in the drawings comprises a flat body formed with anintegral lug 7 which carries a small rivet headed pin 7 which is adaptedto engage the recess 7 formed in the forward end portion of thewall 5The rear end of the cover is formed with a slot 7 which receives thelatch pin 8 screw threaded into the heel of the iron body. The pin Scarries an angular handle 8 which can be turned across the cover 7 andhold said cover against vertical or longitudinal displacement. Asuitable handle frame, 9 is bolted to the cover, and this frame carriesa suitable non-conductive handle 10, which may be of wood or otherdesirable material. No novelty is cl'almed for this construction. Myinvention resides in the construction of the body ofthe sad iron,whereby gas is fed to. the heating or combustion chamber 6' upper wallportion of this, channel or pas- V ceive any suitable sage 11 ispreferably thin, and is formed with a series of longitudinally spacedtrans verse jet forming discharge slots 11, through which infiowingfresh air can es cape into the chamber v6. The slots 11 may be of anynumber or width, and they may be equally or unequally spaced from eachother. The upper, wall portion ofthe channel or passage 11 is raisedabove the plane of the upper surface of the base 5 -ancl the slots 11are so cut in said upper wall as to provide outwardly inclined ordivergent deflecting surfaces 11, whereby the infiowing fresh air willbe deflected upwardly to meet the outflowing gas supply.

Gas is suppliedto thecombustion chamber by means of a tube 12 which fitsthrough an .opening formed in the heel of the iron and has its forwardend fitted in a socket 12 formed in the toe portion of the iron body.Theouter end of the tube 12 is provided with an angular portion 12 whichis provided with a Bunsen mixer 13'and is adapted to reotherwise. I

The lower wall portion of the tube 12 is formed'with a series oftransverse longitudinally spaced gas jet forming discharge slots 12,which terminate to provide deflecting,

surfaces 12, whereby the outfiowing gas will be deflected downwardlyagainst the 7 upper wall portion of the channel 11. The

air jet formingslots 11 are preferably wider than the. gas jet formingslots 12, because gas conduit, flexible or ingwall"17 the gas flowsunder pressure and the air does not. ,The air jet forming slots 11 arear ranged in staggered relation, or alternately,

to the gas jet forming slots 12,so that the streams flowing throughthegas jet formingslots 12 will be between air streams, flowing through theair et forming slots 11". The outermost gas jet forming slots 12 arelocated inwardly of the outermost air jet forming slots 11, so that ajet or stream of fresh air will confine'the gas in the chamber 6, andprevent its leakage tube acts as a baffle for the upfiowing air supply.The transverse gas jet forming slots break the gas supply up into smallportions or streams which mix intimately with the inflowing jets of air,so thatthe particles of gas will be united with particles of air, andcomplete combustionjwill take place, thus avoiding thefformation 0fdan-f gerous products of combustion. The wall 5 or the iron has itsupperf side edge cut-away to provide passages 5 through which theproducts of combustion may escape.

In Figs. 1, 5, 6 and 7 a modifiediforln of the improved iron is shown,consisting of a body 15 having a base 15*" which is formed with alongitudinal valley or recess 15 in which an air tube 16 is disposed,the ends of which are secured respectively'to the heel and the toe ofthe iron. formed with transverse slots 16 longitiidi nally spaced fromeach other, in the same manner as theupper wall portion: of the channel11. The gas supply tube 12 is arranged in the same manner as in Figs. 2,3

and 4, over the slotted tube 16. By this construction tubeshaving slotsof difierent The tube 16 is I widths may be secured in'the iron, or theair 7 tubemay be easily renewed.

Figs. 8, 9-and10 show'another modifica-' tion of the improved gas heatedsad iron, wherein both the gas and the air tubes are removable, andconsequently renewable. In these figures 17 denotes the body of the sadiron, which has abase 17 a and an upstand- An. oval air tube 18 is ex;tended through an opening in the heel portion of the wall 17 andhas'its" forward'or inner end seated on the shoulder 19 of the recess20, formed in the toe'portion of the wall 17?. Immediately abovethe'oval' air tube 18 a gas supply tube 21 substantially wall 21 whichis disposed directly over the convex upper wall portion of the airDi-shaped in cross section is arranged, said tube 21 being formed with aconcave bottom tube 18, and forms a deflector for said air tube 18. Theair jet forming slots 18 of the air tube 18 are formed in theside-portions thereof, as shown in Fig. 9, and the gas jet forming slots21 of the gas supply tube are formed in the side portions thereof, andthe air jet forming slots are arranged in staggered relation to the gasjet forming slots, as shown in Fig. 8, providing an intimate mixing ofthe air and gas. A flexible or other gas conduit may be connected withthe gas supply tube in any'suitable manner, and any sultable cover maybe employed. The products of combustion exhaust through the cut-awayportion 17 forming passages beneath the cover 22.

The lower tube 18 is shown spaced above the base 17, but said tube maybe placed closely against said base.v

I claim 1. A gas iron having an air passage extending entirelytherethrough from butt to point, openings in the upper wall of saidpassage, a fuel supply pipe located within said iron directly above saidpassage, said supply pipe having openings therein inter mediate of theopenings in said passage.

2. A gas iron having an air passage extending entirely therethrough frombutt to point, openings in the upper wall of said passage, a fuel supplypipe located within said iron directly above said passage, said supplypipe having openings therein intermediate of the openings in saidpassage, whereby air from said first openings will be caused tointermingle with gas from said second openings to both sides of saidfirst openings.

3. In a sad iron, the combination with a hollow body having an air inletopening in the rear end thereof, the bottom of said body having alongitudinal chamber therein, said chamber communicating with the airinlet opening in the rear end and having an opening in the upper portionthereof whereby communication is established between the chamber andinterior of the hollow body, and a burner tube or pipe extending throughthe rear end of the body and positioned above. the longitudinal chamber,a recess being formed in the point of the iron and closing the forwardend of the burner tube as set forth.

4. In a sad iron, the combination with a hollow body having an air inletopening in the rear end thereof, the bottom of said body having alongitudinal chamber therein, said chamber communicating with the airinlet opening in the rear end and having an opening in the upper portionthereof whereby communication is established between the chamber andinterior of the hollow body, of a burner pipe extending through the rearend of the body and positioned above the longitudinal chamber.

5. A gas iron having an air passage extending entirely therethrough frombutt to point said passage having openings therein and a fuel supplypipe located within said iron above said passage, said fuel supply pipehaving openings therein arranged in staggered relation .to the openingsin said air pipe.

6. A gas iron having an air passage ex tending entirely therethroughfrom butt to point said passage having openings there in and a fuelsupply pipe located within said iron above said passage, said fuelsupply pipe having openings therein arranged in staggered relation tothe openings-in said air pipe, whereby the wall spaces between theopenings of said fuel supply pipe will form deflecting surfaces for theair from said air pipe.

7. A gas iron having an air passage extending entirely therethrough frombutt to point said passage having openings therein and a'fuel supplypipe located within'said iron above said passage, said fuel supply pipehaving openings therein arranged in staggered relation to the openingsin said air pipe, whereby the wall spaces between.

the openings of said fuel pipe will form deflecting surfaces for the airfrom said air pipe, the openings of said air pipe being relativelylarger than the openings of said fuel supply pipe...

8. A gas iron having an air passage extending entirely therethrough frombutt to point, said passage having openings therein and a fuel supplypipe located within said iron above said passage, said fuel supply pipehaving openings therein arranged in staggered relation to the openingsin said air pipe, whereby the Wall spaces between the openings of saidfuel supply pipe will form deflecting surfaces for the air from said airpipe, the openings of said air pipe being relatively larger than theopenings of said fuel supply pipe, said air passage being formed in thebottom wall of said iron, said air passage being so constructed that airwill be admitted thereinto from both the toe and butt end of said iron,said air passage being formed oval in cross section.

9. A gas iron having an air passage ex tending entirely therethroughfrom buttto point said passage having openings therein and a fuel supplypipe located within said iron above said passage, said fuel supply pipehaving openings therein arranged in staggered relation to the openingsin said air pipe, whereby the wall spaces between the openings of saidfuel pipe will form deflecting surfaces for the air from said air ipe,the opening of said air pipe being relatively larger than the openingsof said fuel supply pipe, said air passage being formed in the bottomwall of said iron, said air passage being o constructed that air will beadmitted thereinto from both the toe and butt ends of said iron, saidair passage being formed oval in cross section, said fuel pipe 7 beingoval in cross section. a

10. A sad iron body having a channel eX- tending therethrough from toeto butt with openings in'both ends thereof and a series of openingsconnecting said channel with the inner chamber of said body, a fuelsupply pipe mounted Within said body and having openings therein formedin staggered relation to said first opening.

11. A gas iron having a central longitudinal passage extendingtherethrough from butt to point, the extremities of which terininate inopenings through said butt and point, the upper wall vof said passagehaving openings therein, and a fuel supply pipe located within said ironabove said openings.

12. In a sad iron, a hollow body having a longitudinally disposedchamber formed therein extending from point to butt andcommunicatingfwith said body, a fuel supply pipe situated above saidchamber, said point and butt having intake openings communicating withsaid chamber, whereby air.

will pass in saidopenings and flow up- Kvardlyfrom said chamber to saidhollow body. v

13. A gas iron having a passage extendlng through the bottom wallthereof from butt tudinally disposed intake openingsthereincommunicating with said channel.

l5. In a sad iron, the combinationwitha hollow body having air inletopenings in the rear and toe ends thereof, the bottom of said bodyhaving a longitudinal chamber therein, said chamber communicating withthe air inlet openings in the rear and toe ends and having an opening inthe upper portion thereof whereby communication is established betweenthe chamber and interior of the hollow body, a burner pipe extendingthrough the rear end of the body and posi tioned above the longitudinalchamber.

' In testimony whereof I afIiX my signature in'presence of twowitnesses, 1

' GEORGE WEDDERBURN.

' Witnesses: 1

O. M. SIMPSON, .B: FRANK GEBEsT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

